"Kuriha-ran" (Neocheiropteris ensata) belongs to the Polypodiaceae family. It is an evergreen fern that is distributed westward from Kanto district of Honshu to Shikoku and Kyushu, as well as Jeju-do (southern Korea), Taiwan, China and India. This fern grows on the grounds and rocks in mountain forests, and can reach 30-50 cm in height. The rhizomatous roots are elongated and creeping under the grounds. The leaves are lanceolate, pepery with long petioles. The sori are roundish and irregularly-arranged in several rows on either side of rachis. The Japanese name is derived from the appearance of chestnut's leaf.